update: readme usage

Author: mikalyh

CleanTabBar.tsx

@@ -38,15 +38,15 @@ yarn add react-navigation-tabbar-collection
 > This TabBar is inspired by [Aurélien Salomon](https://dribbble.com/aureliensalomon) works on [Dribbble](https://dribbble.com/shots/5925052-Google-Bottom-Bar-Navigation-Pattern-Mobile-UX-Design).
 
 ```js
-import TabBar from 'react-navigation-tabbar-collection/ColorfulTabBar';
+import { ColorfulTabBar } from 'react-navigation-tabbar-collection';
 ```
 
 ### Clean
 
 > This TabBar is inspired by [Cuberto](https://dribbble.com/cuberto) works on [Dribbble](https://dribbble.com/shots/5605168-Toolbar-icons-animation).
 
 ```js
-import TabBar from 'react-navigation-tabbar-collection/CleanTabBar';
+import { CleanTabBar } from 'react-navigation-tabbar-collection';
 ```
 
 ## Props

ColorfulTabBar.tsx

@@ -3,7 +3,7 @@ import { NavigationContainer } from '@react-navigation/native';
 import { createBottomTabNavigator } from '@react-navigation/bottom-tabs';
 import { StyleSheet, Text, View } from 'react-native';
 import Icon from 'react-native-vector-icons/AntDesign'
-import {CleanTabBar} from 'react-navigation-tabbar-collection';
+import { CleanTabBar } from 'react-navigation-tabbar-collection';
 
 const Tab = createBottomTabNavigator();